RU1810151C - Drawing die for deforming products, mainly of lead-tin alloys - Google Patents

Abstract

SUMMARY OF THE INVENTION: The fibers comprise an inlet zone, a conical working zone with a taper angle of 37-45 °, a cylindrical gauge zone with a length of 0.05-0.15 in diameter, and an outlet zone. 2 ill.

Description

The invention relates to drawing production, in particular to the production of tin-lead alloy wire.

The aim of the invention is to increase yield by reducing breakage.

Fig. 1 is a general cross-sectional view of a die; figure 2 - dependence of the number of breaks (N) of the processed material from the taper angle of the working area for the alloy wire with a hole (channel) through which the processed material is drawn, and consists of an input zone 1, which serves to facilitate the entry of the workpiece into the fiber and feed lubrication in the working area; the working zone 2, which serves to effect the deformation of the drawn metal, during which the cross section of the wire blank is reduced to a predetermined: calibrating zone 3, which serves to give the dimensions of the cross section of the drawn wire a predetermined accuracy; output zone 4, which serves to protect the drawn metal from damage when it leaves the calibration zone. The length of the calibrated zone is 0.05-0.15 of its diameter, and the working area

made with a taper angle of 37-45 °.

Example. The drawing of a composite wire of tin-lead alloy with a diameter of 1.04 by a diameter of 1.0 mm was carried out through carbide dies with a length of the ka-, liberating zone equal to 0.1 mm (0.1 dK, where c1k is the diameter of the calibrating zone). Dies were made with a taper angle of the working zone equal to 10, 15, 20, 35, 40, 50, 65 J. Breakage was determined for the Standard amount of wire 100 kg with a diameter of 1.04 mm. For each corner of the working area, 10 experiments were performed. The results were averaged. The number of wire breaks (N) per 100 kg of standard weight for a working area angle of 2 a 10 ° was 4, for 2 a 15 N 2.9, for 2 "20 °, N 2.1, for 2 N - 1.4, dl 2a 30 ° N 1.0, dl 2 a 35 N 0.75, dl 2 a 40 ° N - 0.55, dl 2 a 45 ° N 0.6, dl 2 a 50 ° N 0.7, dl 2 a 55 ° N 0.9, for 2 a 60 ° N 1.3, for 2 a -65 ° N 1.6. The results of the experiment on breakage are presented in figure 2.

Experimental studies of the claimed drawing tool for drawing plastic metals and alloys

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have shown that, compared with a device of a similar designation, the inventive device, due to the choice of the angle of the working area, allows to increase the yield by reducing breakage.

Claims (1)

The claims of Wolok for the deformation of products mainly from lead-tin nicholas alloys containing an inlet zone, a conical working zone, a cylindrical gauge zone with a length equal to 0.05-0.15 of its diameter, and an outlet zone, characterized in that, in order to increase the yield by reducing breakage, the working zone is made with an angle tapers 37-45 °. A / 6--5 - c 3 g - i n-- 1 - i - IU b 20 3D 4 O 6O FIG. It h-t-f-- - (-.